We're going to WDW in July, and have an 8:50 pm ADR at 'Ohana. The MK fireworks are at 10:00 most nights(if not every night) in the summer. So we're thinking that we'll be able to have a nice leisurely meal, and then we'll get to enjoy the fireworks with our dessert. We've never actually tried this before, but we have eaten at 'Ohana many times and the meal usually takes at least an hour. I'm pretty confidant that our plan will work.

Just remember Ohanas tend to run behind on reservations, especially in busier times of the year, so it is highly unlikely you will be seated in time if the fireworks are at 9. Now, if they are at 10, you might be in the middle of your meal during them....

We were just at O'Hana last Sunday (Mothers Day) and had an 8:15 reservation - we were seated within 15 minutes and at 9:00pm the lights dimmed and the Wishes music started playing and we had a perfect seat and everyone gathered around the windows to watch! We were surprised because I thought Wishes was at 10:00pm!? It was beautiful!